Expression analysis of polyphenol oxidase isozymes by active staining method and tissue browning of head lettuce (<i>Lactuca sativa</i> L.)

Noda, Takahiro; Iimure, Kazuhiko; Okamoto, Shingo; Saito, Akira

doi:10.1080/09168451.2017.1336921

Cited by 5 publications

(2 citation statements)

References 29 publications

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“…The increase in the total polyphenol contents of young barley leaves, identified by the assays, resulted from the activation of phenylalanine ammonia lyase (PAL) ( Figure 4 A). This enzyme is involved in the biosynthesis of polyphenol precursors, mainly cinnamic acid [ 39 ]. A high level of polyphenols maintained in the plant material promotes a reduction in the activity of polyphenol oxidase (PPO) ( Figure 4 B).…”

Section: Resultsmentioning

confidence: 99%

Variability of Properties Modulating the Biosynthesis of Biologically Active Compounds in Young Barley Treated with Ozonated Water

et al. 2023

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This paper presents the effects of irrigating barley plants with different type of water solutions saturated with gaseous ozone generated from atmospheric air. The study investigated the effects of the applied types of water on the modulation of the biosynthesis of selected bioactive compounds (content of total polyphenols, small molecule antioxidants, vitamin C) in the produced plant material. A number of transformations of reactive oxygen species (ROS) and nitrogen compounds have also been postulated; these are observed during the saturation of water with gaseous O3 and 30 min after the end of the process. It was shown that after the process of water saturation with gaseous O3, the gas later is converted to compounds with high oxidative potential and good stability; these, in turn, lead to the oxidation of oxidates generated from atmospheric nitrogen into nitrates, which exhibit fertilising properties. Thirty minutes after the process of H2O saturation with gaseous O3 was completed, the tests showed the highest concentrations of nitrates and the relatively high oxidative potential of the solution originating from H2O2 with a low concentration of the dissolved O3. This solution exhibited the highest activity modulating the biosynthesis of polyphenols, small molecule antioxidants and vitamin C in young barley plants. The resulting differences were significant, and they were reflected by 15% higher total polyphenol content, 35% higher antioxidative potential and 57% greater content of vitamin C compared to the control specimens (plants treated with fresh H2O).

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Section: Resultsmentioning

confidence: 99%

Variability of Properties Modulating the Biosynthesis of Biologically Active Compounds in Young Barley Treated with Ozonated Water

et al. 2023

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“…In order to measure the performance of the filtering algorithm, the signal-to-noise ratio (SNR) [ 24 , 25 ] is introduced to evaluate the filtering effect of the algorithm. The lower the signal-to-noise ratio, the worse the signal quality; the higher the signal-to-noise ratio, the better the signal quality [ 26 ].…”

Section: Methodsmentioning

confidence: 99%

Research on Several Key Problems of Medical Image Segmentation and Virtual Surgery

Luo

Zhang

2022

Contrast Media & Molecular Imaging

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Medical images play an important role in modern medical diagnosis. Many clinicians make correct and appropriate diagnosis and treatment plans by means of medical images. With the development of science and technology, the application of medical image needs not only to simply read the image, but also to fuse advanced technology to analyze and process the image from a deeper level, such as the proposal of virtual surgery. Therefore, this article focuses on several key issues of medical image segmentation and virtual surgery. First, medical images are preprocessed by gray level transformation, interpolation, and noise elimination techniques. Second, level set model-based segmentation algorithm is adopted and improved. Finally, a constrained Delaunay tetrahedron method based on a point-by-point insertion method is proposed to reconstruct the tetrahedron mesh model. In order to eliminate the thin element, the tetrahedron mesh model is optimized. The simulation results show that this article improves the segmentation algorithm based on the level set model, which effectively improves the contradiction between the convergence accuracy and the convergence speed of the algorithm. The proposed tetrahedral mesh reconstruction algorithm realizes the generation of tetrahedral finite element meshes with complex boundaries and improves the quality of the volume model by optimizing the model.

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Purification, characterization and inactivation kinetics of polyphenol oxidase extracted from Cistanche deserticola

Huang

Gao

et al. 2023

Planta

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Expression analysis of polyphenol oxidase isozymes by active staining method and tissue browning of head lettuce (Lactuca sativa L.)

Cited by 5 publications

References 29 publications

Variability of Properties Modulating the Biosynthesis of Biologically Active Compounds in Young Barley Treated with Ozonated Water

Variability of Properties Modulating the Biosynthesis of Biologically Active Compounds in Young Barley Treated with Ozonated Water

Research on Several Key Problems of Medical Image Segmentation and Virtual Surgery

Purification, characterization and inactivation kinetics of polyphenol oxidase extracted from Cistanche deserticola

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